Crystals dating to medieval times show that the last warming period wasn’t confined to Europe. It was global, and it had nothing to do with CO2 emissions:

A team of scientists led by geochemist Zunli Lu from Syracuse University in New York state, has found that contrary to the ‘consensus’, the ‘Medieval Warm Period’ approximately 500 to 1,000 years ago wasn’t just confined to Europe.

In fact, it extended all the way down to Antarctica – which means that the Earth has already experience global warming without the aid of human CO2 emissions.

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‘Ikaite is an icy version of limestone,’ said Lu. ‘The crystals are only stable under cold conditions and actually melt at room temperature.’

It turns out the water that holds the crystal structure together – called the hydration water – traps information about temperatures present when the crystals formed.

This finding by Lu’s research team establishes, for the first time, ikaite as a reliable way to study past climate conditions.

From the ikaite crystals takes in samples off Antarctica, Lu’s team deduced that the medieval warming period was global. That contradicts the UN IPCC and Algore dogma, which states that the medieval warming was localized to northern Europe.

Just a guess here, but the medieval warming and the little ice age that followed it probably line up well with the solar activity cycle. That big orange thing in the sky has much more to say on our climate than anything we do.

Bryan Preston has been a leading conservative blogger and opinionator since founding his first blog in 2001. Bryan is a military veteran, worked for NASA, was a founding blogger and producer at Hot Air, was producer of the Laura Ingraham Show and, most recently before joining PJM, was Communications Director of the Republican Party of Texas.

The site is ScienceDirect and the article is found in the “Earth and Planetary Sciences Letters” section under the title ‘An ikaite record of late Holocene climate at the Antarctic Peninsula’.

You would have to be a member of ScienceDirect to view the entire paper but the abstract reads as follows (pretty heavy going):

“Calcium carbonate can crystallize in a hydrated form as ikaite at low temperatures. The hydration water in ikaite grown in laboratory experiments records the δ18O of ambient water, a feature potentially useful for reconstructing δ18O of local seawater. We report the first downcore δ18O record of natural ikaite hydration waters and crystals collected from the Antarctic Peninsula (AP), a region sensitive to climate fluctuations. We are able to establish the zone of ikaite formation within shallow sediments, based on porewater chemical and isotopic data. Having constrained the depth of ikaite formation and δ18O of ikaite crystals and hydration waters, we are able to infer local changes in fjord δ18O versus time during the late Holocene. This ikaite record qualitatively supports that both the Medieval Warm Period and Little Ice Age extended to the Antarctic Peninsula.”

This isn’t the first evidence that the MWP was global. Evidence has been found in places like south america and I believe China.

In one paper I read about 6 years ago on another subject, dead trees close to 1000 years old were found above the current treeline in the Sierra Nevadas. If that doesn’t make anyone go, YES!, there’s no hope.